Carbureter.



l. J. KARTHEISER.

CARBURETER.

APFLICATIDN FILED s EPT. I4, i914.

1,9757 Patented Mar. 18,1919.

2 SHEETS-SHEET l.

l. l. KARYHEISER.

CARBURETER.

APPLBCATION FILED SEPT. I4. |914.

Patented Mar.

2 SHEETS-SHEET 2.

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rabid?! MPL@ 7" nfrnfr JOHN J'. KARTHEISER, OF CHICAGO, ILLINOIS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO KARBUAB COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

CARBURETER.

Specification of Letters Patent.

Patented Mar; is, 1919.

To all whom 'it may concern:

Be it known that I, JOHN J. KARTHEISER, a citizen of the United States, and a resident of Chicago, in the county. of Cook and State of Illinois, have invented a certain, new and useful Improvement in Carbureters, of which the following is a specification.

This invention relates to carbureters.

Primary objects of the invention are to provide means in a carbureter for properly proportioning the quantities of air and of hydrocarbon supplied to the carbureter to produce practically a uniform explosive mixture of high efficiency under all conditions of hydrocarbon feed for which the carbureter is designed and adapted; a further object of the invention is to provide effective means for thoroughly breaking up the hydrocarbon and for thoroughly mixing said hydrocarbon vapor and air.

To effect the foregoing objects, a carbureter of my invention comprises the various features, combinations of features and details of construction hereinafter described and claimed.

In the accompanying drawings in which my invention is fully illustrated,

Figure 1 is a central, vertical, sectional view 0f my improved carbureter.

Fig. 2 is a sectional plan view thereof on the line 2-2 of Fig. 1.

Fig. 3 is a partial vertical sectional View, slightly enlarged, taken on the line 3-3 of Y ig. 1.

Fig 4 is a sectional view on the line lle-4 of Fig. 1. l

Fig. 5 is a partial view similar to Fig. 1 showing the valves open; and

Fig 6 is sectional plan view on the" line 6-6 of Fig. 1.

My improved carbureter comprises a body portion, designated as a Whole A, formed in which is a mixing chamber A. To provide access to said chamber, one side or end there- 0f is closed by a -removable plate a and, if considered desirable, both ends thereof may be thus removable.

The carbureter is adapted to be connected to the manifold in the usual manner, and is provided with a discharge opening 1 'which connects the mixing chamber A directly with the manifold.

Instead of employing a single jet or nozzle for supplying hydrocarbon tothe carbureter,

I employ a plurality of separate nozzles and corresponding air admission openings ,so arranged and controlled that they may be brought successively into communication with the chamber A. As shown, there are live separate nozzles designated, respectively, 2, 3, 4, 5 and 6 located in separate air admissionpassageways 2', 3', 4', 5 and 6'. Hydrocarbon is supplied to the nozzles from a float reservoir A2 through passageways 7 formed in the body portion of the carburetei. Where the passageways 7 extend across the air supply passages, the body portion of the carbureter is cored out to provide the necessary passageways, as shown at 8, F ig. 3.

As compared with hydrocarbon supply nozzles heretofore used, the nozzles of my improved carbureter are characterized by the feature that the jet orifices thereof are relatively much smaller; which in combination with the separate air admission passageways therefor and the means for bringing the same. separately and successively into communication with/the mixing chamber A', obviously.

renders it possible to produce a practically uniform and properly proportioned explosive mixture, thus insuring maximum efficiencyv and economy of hydrocarbon.

My invention contemplates the use of any desired or approved form of float reservoir A2, which need not 4therefore be described in detail.

In order to provide for varying the proportions of air and of hydrocarbon so as to produce an explosive mixture which shall be richer or poorer in hydrocarbon as may be desired, means are provided for varying the effective suction exerted on the nozzlesby the motor when said nozzles are in communication with the mixing chamber, which will operate to draw relatively more or less hydrocarbon from said nozzles as said suction is increased or decreased. As shown, said means consists of a butterfly valve 9 located in -a downward hollow extension 10 of the air admission passageway 2', which, in the case of an automobile, is adapted to be controlled by the driver of the car by means of a usual klever on the steering post, not shown, which construction it is obvious that, if only the air passageway 2 is in communication with the mixing chamber A',l partly closing the valve 9 will reduce the size of said air admission passageway and will nincrease vthe suction on the nozzle 2, thus increasing the relative proportion of hydrocarbon and producing a rich mixture. n the other hand, opening said valve will reduce the suction on said jet nozzle and will increaseu the relative quantity of air, thus producing a lean mixture.

In like manner, if two or more of said passageways are open to the mixing chamber A', closing the valve 9, will increase the suction on all of said nozzles, increasing the proportion of hydrocarbon and by reducing the aggregate size of the air openings, correspondingly reducing the proportion of air, thus producing a richer or leaner mixture as the valve 9 is closed or opened.

The air passageways 2, 3, 4, 5 and 6 and .thus the nozzles 2, 3, 4, 5 and 6 are controlled by suitable valves, constructed and arranged for opening and closing said air passages separately and in succession. As shown, said Valves and the means for operating the 4same are as follows Extending across the 4mixing chamber A' and having bearings in the end walls thereof is yan operating shaft 12 to which oscillatory movement is adapted to be imparted by-` means` of usual. operating mechanism, not shown, which comprises a. crank arm 13 secured -to said shaft -so as to rotate therewith and a connecting ro-d 14 pivoted to said crank arm. Pivoted on said shaft, preferably adjacent to opposite ends thereof, are what. may be appropriately ldesignated shutter valves 15 and 16, the outer sides of which are concentric with said shaft 12 and are fitted to the curved lower side 17 of the mixing chamber which is also concentric with said shaft. posite directions-that is toward and from each other-is adapted to be imparted to said Ishutter valves 15 and 16 by means of operative connection with-the shaft 12. As shown, said connection consists of slides 18 and 19, one located iadjacent to each end of the mixing chamber. Formed in said slides are slots 20 and 21, through which, respectively, extend the shaft 12 and a rod 22, the ends of which are secured in the end walls of the carbureter and which extend-s substantially parallel with said shaft 12. Endwise lmovement in opposite directions is adapted to be imparted to said slides 18 and 19 by means of crank arms 23 on the shaft 12 which are connected to'lugs 24 on said slides by links 25 the opposite ends of which are pivotallvconnectedto said crank arm-s and lugs. Secured in rthe lslides 18 and 19 are pins 26 which engage downwardly divergent Slots 27 and 28 formed in the end plates Pivotal movement in op-A or walls 29 and 30 of the shutter valves 15 and 16, which are extended so as to overlap each other. Thus, as said slides are raised and lowered, movement will be imparted to said shutter valves toward and from each other. By a proper divergence 0f the slots 27 and 28, ilt is obvious that said shutter valves may be opened and closed with desired rapidity.

The slides 18 and 19 are confined in operative position between the overlapping walls or plates 29 and 30 of said shutter valves and the hubs of the 'crank arms The air passageway 2 communicates with the mixing chamber at a point directly beneath Ithe meeting edges of the shutter valves 15 and 16, when said valves are closed, thus, the initial movement of said shutter-valves in opening will uncover said passageway 2 so that thesuction of the motor will operate to draw ia. mixture of hydrocarbon vapor and of air into the mixing chamber from sai d air passageway and the nozzle 2 located therein. As shown, also, the passageways 3', 4', 5 'and 6' communica-te with the mixing chamber A yat points on opposite sides of said mixing chamber and about equal distances from the meeting edges of the shutter valves when closed, said passageways being arranged two on each side of said mixing chamber. To provide for opening and closing said air passageways 3, 4, 5 and 6 in succession as said shutter valves open and close,'openings 32, 33 and 34 are formed in said'shutter valves each in line with one of rsaid air passages, the relation being such that when said shutter valves are closed all of said `air passageways will be' closed or cov-ered. As shown, said openings .are arranged in line with the passageways 3', 4 and 5', respectively. Also, said openings are made of different operative lengths circumferentially of said shutter valves, their inner ends cutting out at the meeting edges of said valves, the lengths of said openings being such that, at a desired interv-al of time before or after full opening of the )liassageway. 2', preferably immediately after full opening thereof, the opening 32 will begin to pass over the air passageway 3'; and2 in like manner, the openings 33 and 34 and the edge of the shutter valve 15 will pass over and uncover the -a-ir passageways 4', 5" and 6', respectively.

With the described construction, it is obvious that t'he quantity of hydrocarbon feed to the engine may be regulated with great precision and nicety and also tha; the proportion of air and hydrocarbon may be accurately varied to produce an effective mixture.

To effect lthe object of the invention, as it relates to breaking up the hydrocarbon supplied to the motor and for thoroughly mixing the hydrocarbon Vapor and air, the dis-4 trolled by a suitable valve which is operatively connected with the means for operating the shutter valves 15 and 16 so that said valves will open and close together, the relation being such, however, that the shutter valves 15 and 16 will open more rapidly than the valve which controls said discharge opening 1. As shown, said dis-charge opening 1 is controlled by shutter valves 35 and 36 which are practically identical in construction with the shut-ter valves 15 and 16, excepting that they do not have the overlapping end lates or walls 29V and 30 of said shutter va ves 15 and 16, and which are pivoted to the rod 22 in substantially the same manner as said shutter valves 15 and 16 are pivoted to the shaft 12. i

The mean-s for opening and closing said shutter valves 35 and 36 consists of links 37 and 38 the opposite ends of which are pivotally connected to the slides 18 and 19 and to the shutter valves 35 and 36, respectively,

the points of pivotal attachment to said slides being `above their `points of pivotal attachment to said valves, whereby downward movement of said slides will open and uipward move-ment thereof will close said shutter valves.

Vith the described construction, it is obvious that, when the slides 18 and 19 are moved downward to separate the shutter valves 15 and 16 a sufficient distance to open or uncover the air passageway 2', the sluitter valves and 36 will also be opened but to a less extent, and that the opening of said shutter valves will continue as saidI slides are depressed to open the different air passageways 3', 4', 5 and 6. Due to the factthat the size of the discharge opening from the carbureter is graduated to correspond to the opening or uncovering of different numbers of air passageways, it is obvious that the mixture in the chamber A will pass through the .discharge opening from the carbureter at a high velocity, which will cause the particles of hydrocarbon to strike the shutter valves 35 and 36, the impact operating to break up said particles of hydrocarbon. Also, as the air and hydrocarbon vapors pass out of the carbureter, they will converge toward the contracted discharge opening, thereby effecting an intimate association and intermixing thereof, which will produce a uniform explosive mixture of high efiiciency.

Preferably, also, I supplement the breakin up and mixing action of the shutter va ves and 36 by baffle plates which extend across the mixing chamber A between the air admission openings and the'discharge opening and which are adapted to impart an eddying effect to the current of mixed air and hydrocarbon vapor, the impact of the hydrocarbon particles against said baie plates operating to break up and finely subdivide the same and the eddying action produced thereby operating to effect a thorough mixing of the air and hydrocarbonv vapor. As shown, said plates comprise a central V-shaped plate 39 the sides of which diverge upwardly and upwardly inclined plates 40 arranged at each side thereof, the inclination of said plates being such that they will divert the current passing from the air admission openings to the discharge opening and break it up into a number of conicting currents, which will produce the eddying and mixing effect desired. Said baille plates preferably extend crosswise of the mixing chamber, that is substantially at right angles to the opening of the valves 35 and 36. My invent-ion. however, contemplates the use of any desired or approved form of baffle plate arranged in any desired manner.

1. In a carbureter, the combination of a casing provided with a mixing chamber, a plurality of air admission passageways and with a discharge opening, nozzles in said air admission passageways which communicate with a source of hydrocarbon supply, anda valve for controlling said air admission passa-geways comprising sections which are movable toward and from each other and which coperate to open and close said air admission-passageways and to expose the hydrocarbon nozzles positioned therein, respectively, in succession, whereby the quantities of air and of hydrocarbon may be varied in pre-determined fixed proportions, substantially as described.

2. In a carbureter, the combination of a casing provided with a mixing chamber, a plurality of air admission passageways and with a discharge opening, nozzles in said air admission passageways which communicate with a source of hydrocarbon supply, and a valve for controlling said air admission passageways constructed and arranged for opening said passageways in succession beginning with a centrally located p..-ssageway and for closing them in reverse order, whereby the quantities of air and of hydrocarbon may be varied in pre-determined fixed proportions, substantially as described.

3. In a carbureter, the combination' of a casing provided with a mixing chambera plurality of air admission passageways comprising a. central passageway and passageways on both sides thereof` and said mixing chamber being also provided with a discharge opening, nozzles in said air admission passageways which communicate with a source of hydrocarbon supply, and a valve for controlling said air admission passageways comprising sections whichare movable toward and from cach other, constructed air admission passage-ways, the relation being such that the central passageway will be opened firstA and closed last, and alternate passageways on opposite sides of said central passageway will be opened and closed in succession, substantially as described.

4. In a carbureter, the combination of a casing provided with a mixing chamber, a plurality of air admission passageways and with a discharge opening, nozzles in said air passageways which communicate with al source of hydrocarbon supply, a valve for controlling said air admission passageways comprising sections which are movable toward and from each other, constructed and arranged for opening and closing said air admission passageways in succession, and a baille which extends across the mixing chamber of said carbureter casing between the air admission passageways and the discharge vopeningithereof, substantially as described.

5. In a carbureter, the combination of a casing provided with a mixing chamber, a plurality of air admission passageways and with a discharge opening, nozzles in said air admission passageways which communicate with a source of hydrocarbon supply, valves which control said air admission passageways and said vdischarge openinr, respectively, each of said valves comprising sections which are movable toward and from each other and the valve which controls said air admission passageways being constructed and arranged for opening and closing said passageways in succession, and a battle which extends across the mixing chamber of said carbureter between the air admission passageways and the discharge opening, sunstantially as described.

6. In a carbureter, the combination of a casing provided with a mixing chamber, a plurality of air admission passageways and with a discharge opening, nozzles in said passageways which communicate with a source of hydrocarbon supply, and a valve which controls said air admission passageways comprising sections which are movable toward and from each other, said valve sections being provided with openings of different operative lengths which aline with said air passageways, respectively, substantially as described.

7, In a carbureter, the combination of a ,casing provided with a mixing chamber, a plurality of air admission passageways and with a discharge opening, nozzles in said passageway which communicate with a source of hydrocarbon supply, a valve which controls said air passageways comprising sections which are movable toward and from each other, said section being provided with openings of different operative lengths which aline with different air passageways, a valve operating shaft rotatably mounted in said carbureter casing and operative connection between said shaft and said valve sections whereby oscillation of said shaft will impart movement to said valve sections toward and from each other, substantially as described. i

8. In a carbureter, the combination of a casing provided with a mixing chamber, a. plurality of air admission passageways and with a discharge opening, nozzles in said passageways which communicate with a source of hydrocarbon supply, a pivoted shut-ter valve which controls said air passageways provided with openings of different operative lengths .which aline with different air passageways, a valve operating shaft'rotatably mounted in said carbureter casing and operative connection between said shaft and said shutter valve whereby oscillation of said shaft will impart pivotal movement to said valve in opposite directions, said connection comprising a slide, guides therefor, a crank arm on said valve-operating shaft, a link which connects said arm with said slide and con-l nection between said slide and shutter valve, substantially as described.

9. In a carbureter, the combination of a casing provided with a mixing chamber, a plurality of air admission passageways and with a discharge opening, nozzles in said passageways which communicate with a source of hydrocarbon supply, a pivoted shutter valve which controls said air passageways provided with openings of different operative lengths which aline with different air passageways, a valve-operating shaft rotatably mounted in said carbureter casing and operative connection between said shaft and said shutter valve whereby oscillation of said shaft will impart pivotal movement to said valve in opposite directions, said connection comprising a slide, guides therefor, a crank arm on said valve-operating shaft, a link which connects said arm with said slide and a pin in said slide which engages a cam slot in said shutter valve, substantially as described.

10. In a carbureter, the combination of a casing provided with a mixing chamber, a plurality of air admission passageways and with a discharge opening, nozzles in said passageways which communicate with a source of hydrocarbon supply, a pair of pivoted shutter valves which control said air admission passageways and which are provided with openings of different operative lengths, a valve-operating shaft rotatably mounted in said valve casing and operative connection between4 said shaft-andl shutter valves whereby oscillation of said sha-ft will impart pivotal movement to said shutter valves toward and from each other, substantiallyas described? 11. In a carbureter, the combinationofa casin provided with a mixing chamber, a

plura ity of air admission passageways and with a discharge opening, nozzles in said 'passageways which communicate with a source of hydrocarbon supply, a pair of pivoted shutter valves which control said air admission passageways and s'aid discharge opening respectively, a valve-operating shaft rotatably mounted in said yvalve casing, a crank arm thereon, a slide, a link which connects said crank armpwith said slide whereby oscillation of said shaft will impart movement to' said slide in opposite directions, and operative connection between said slide and said pairsof shutter valves, respectively, adapted to impart pivotal movement thereto toward and fromeach other, said` connections comprising 4links which connect the' shutter Valves controlling the discharge opening with said slide, substantially 'as described.

12. Ina carbureter, the combination of a casing provided with a mixing chamber, a plurality of air admission passageways and with a` discharge opening, nozzles in said passageways which communicate vwith a source of hydrocarbon supply, a pair. of pivoted shutter valves which control saidair admission passageways and saiddischarge f openingy respectively, avalve-operating shaft rotatably mounted in said -valve casing, a crank arm thereon, a slide, a link` whlch connects said crank arm wlth saldl slide'whereby oscillation of said shaft will` 'impart movement to said slide in opposite ward and from'each other, said connections comprising a pin secured inl said slide which engages cam slots formed in the shutter valves which control' the air admission pasand links which connect said slide sageways` control the with the lshutter valves which discharge opening from said carbureter,

substantially as. described.

v vIn testimony that I claim the foregoingas my invention,'I al'lix my signature inthe presence of two subscribing witnesses' this 28th day of August, 1914.-'.

JOHN J. KARTHEISER.-

Witnesses: v

S.'A. HAWKINS, A. H. GUNGGoLL. 

